Synthesis and Characterization of Fe₃O₄ @ Polyrhodanine Nanocomposite with Core–Shell Morphology

Abstract

Core-shell magnetic nanoparticles have received significant attention recently and are actively investigated owing to their large potential for a variety of applications. In this study, the synthesis and characterization properties of magnetite @ polyrhodanine (Fe 3 O 4 @ PRh) core-shell nanoparticles have been investigated. To monitor the morphology, size, structure, thermal stability, and magnetic properties of nanoparticles, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetic analysis, and vibrating sample magnetometer were carried out. The results indicate that a thin film of polyrhodanine was coated on the surface of Fe 3 O 4 nanoparticles. The coated shell of polyrhodanine can protect the Fe 3 O 4 cores from being oxidized. Also, the results presented the crystalline, small size, and high magnetization value for the core-shell structure. C

Multifunctional Properties of Binary Polyrhodanine Manganese Ferrite Nanohybrids—From the Energy Converters to Biological Activity

“…It is worth noting that the MnFe 2 O 4 nanoparticles shift the decomposition temperature of the polymer to higher ones, enhancing PRHD thermal stability. This is also consistent with previous reports on PRHD hybrids with cores containing Fe 3 O 4 [ 28 ] and CoFe 2 O 4 [ 19 ] nanoparticles. The content (%) of the polymer was calculated with respect to the MnFe 2 O 4 nanoparticles and is as follows PRHD@MnFe 2 O 4 10%@90%, PRHD@MnFe 2 O 4 17%@83%, PRHD@MnFe 2 O 4 37%@63%, and PRHD@MnFe 2 O 4 45%@55%, respectively.…”

“…Analysis of the thermal behavior of PRHD@MnFe 2 O 4 binary hybrids was based on the TGA measurement conducted under inert nitrogen atmosphere at a temperature in the range of 25–650 °C ( Figure 3 ). As was previously reported [ 28 ] the decomposition of the PRHD polymer is a complex and multistep process.…”

“…Initially (up to 110 °C) release of the moisture occurs, whereas between 110–290 °C degradation of the PRHD chain and depolymerization progresses. The 290–425 °C range is attributed to the 2nd and 3rd degradation steps of PRHD [ 28 ]. In the case of the hybrid materials, decomposition proceeds similarly but the amount of released organic material is different and depends on the quantity of PRHD deposited on a nanoparticle surface.…”

Fixed bed column adsorption of Cr(VI) from aqueous solution using nanosorbents derived from magnetite impregnated Phaseolus vulgaris husk

“…The pH of the reaction mixture was maintained to 10. The reaction mixture was stirred for 30 min at 80°C . After completion of reaction, the brownish black precipitate was cooled to room temperature.…”

One-step synthesis and magnetic properties of Ni-Fe3O4@PI core–shell composite microspheres

“…[12][13][14] In this study, we selected a facile one-step synthesis of the Ni-Fe 3 O 4 @polyimide (PI) coreshell nanostructures via an in situ chemical method, offering the opportunity to remove the preprocessing steps and therefore simplifying the preparation. Qu 17 and may exhibit unique electronic properties due to electron transfer processes with other metal ions present. 18 Therefore, adding nickel (Ni)(II) ions to the cores can further improve the catalytic activity and microwave absorption ability of the composites.…”